patches/gcc/4.2.2/260-flatten-switch-stmt-00.patch
author Esben Haabendal <esben.haabendal@prevas.dk>
Wed Sep 26 16:37:31 2012 +0200 (2012-09-26)
changeset 3066 43ace4bb005e
parent 431 8bde4c6ea47a
permissions -rw-r--r--
samples: add new m68k-unknown-uclinux-uclibc sample

Signed-off-by: "Esben Haabendal" <esben@haabendal.dk>
[yann.morin.1998@free.fr: upgrade to using gcc-4.7.2]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <87r4pod1hm.fsf@arh128.prevas.dk>
PatchWork-Id: 187182
     1 diff -durN gcc-4.2.1.orig/gcc/stmt.c gcc-4.2.1/gcc/stmt.c
     2 --- gcc-4.2.1.orig/gcc/stmt.c	2007-07-19 05:25:32.000000000 +0200
     3 +++ gcc-4.2.1/gcc/stmt.c	2007-08-03 20:37:19.000000000 +0200
     4 @@ -2512,7 +2512,11 @@
     5  	  use_cost_table
     6  	    = (TREE_CODE (orig_type) != ENUMERAL_TYPE
     7  	       && estimate_case_costs (case_list));
     8 -	  balance_case_nodes (&case_list, NULL);
     9 +	  /* When optimizing for size, we want a straight list to avoid
    10 +	     jumps as much as possible. This basically creates an if-else
    11 +	     chain.  */
    12 +	  if (!optimize_size)
    13 +	    balance_case_nodes (&case_list, NULL);
    14  	  emit_case_nodes (index, case_list, default_label, index_type);
    15  	  emit_jump (default_label);
    16  	}
    17 @@ -3070,6 +3074,7 @@
    18  	    {
    19  	      if (!node_has_low_bound (node, index_type))
    20  		{
    21 +		  if (!optimize_size) /* don't jl to the .default_label. */
    22  		  emit_cmp_and_jump_insns (index,
    23  					   convert_modes
    24  					   (mode, imode,